OS2013 工業用純チタンの二軸圧縮に伴う塑性異方性成長とその集合組織依存性(OS20-3 チタンおよびLPSO型マグネシウム合金,OS-20 HCP金属の実験力学と計算力学)

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  • OS2013 Evolution of Plastic Anisotropy and Its Texture Dependency of Industrial Pure Titanium by Biaxial Compression

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The compressive plastic behavior of a commercial grade pure titanium was systematically investigated. Uniaxial and biaxial compression tests with linear strain paths were performed on titanium specimens by means of the original biaxial compression test device. The initial textures of the specimens were controlled using heat-treatment and cold-rolling, in order to investigate the influences of texture and strain paths on the plastic behavior. The results revealed that the initial texture strongly influenced on the yield surface and the anisotropy growth. Area fraction of mechanical twinning was also measured, thus the fraction of twinning was found to vary according to the strain path and then anisotropic hardening was promoted.

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